Patents Examined by M. White
  • Patent number: 6034724
    Abstract: A method and an apparatus are provided for eliminating a line-crawling phenomenon caused by nonuniformity in photosensitive characteristics of light-receiving pixels disposed in a color imaging device. A pixel signal (S) output from a color imaging device (2) is converted by a sample-and-hold circuit (4) and an A/D converter (6) into pixel data (P) so as to be stored in an image memory (8). An arithmetic unit (12) multiplies luminance data formed on the basis of each pixel data (P) by a line-crawling correction coefficient (LC) stored in a nonvolatile memory (10), for example, so as to form and output luminance data (V) which is substantially equivalent to that obtained when the light-receiving pixels have a uniform photosensitive characteristic. The line-crawling correction coefficient (LC) has been determined beforehand.
    Type: Grant
    Filed: February 3, 1997
    Date of Patent: March 7, 2000
    Assignee: Chinon Kabushiki Kaisha
    Inventor: Hideo Nakamura
  • Patent number: 5946031
    Abstract: A photographic apparatus combines an image capturing apparatus with an image rendering apparatus, where the image capturing apparatus operates as an electronic camera and has an integral liquid crystal display panel for viewing acquired images prior to printing the images onto a photosensitive medium. The images are individually selectable to adjust image properties prior to transmittal of the image to a high-resolution liquid-crystal display in the image rendering apparatus. The image rendering apparatus produces an image on the photosensitive medium by projecting illumination through the image present in the high-resolution liquid-crystal display, through a copy lens, and onto the medium.
    Type: Grant
    Filed: October 22, 1996
    Date of Patent: August 31, 1999
    Assignee: Polaroid Corporation
    Inventor: Lawrence M. Douglas